jackies

O.k folks i appreciate that some people hate these threads, but i have tried everything and your my last resort. The BBC uses a piece of instrumental music to advertise shows on BBC 1 and 2. The music is used to advertise things like the apprentice and spooks possibly enemy of the state and various other shows which are a bit "hard" . It is a beat which gets louder and higher with a scratchy sound every now and again. Sorry not very helpful but it is played all the time. Thanks in advance for your help.
Jackie